Henry Hagg Lake
|Henry Hagg Lake|
Hagg Lake as seen from near Scoggins Dam
|Location||Oregon Coast Range foothills, Washington County, Oregon, USA|
|Primary inflows||Scoggins Creek|
|Primary outflows||Tualatin River|
|Basin countries||United States|
|Water volume||53,640 acre·ft (66,160,000 m3)|
|Surface elevation||285 ft (87 m)|
Henry Hagg Lake (also Hagg Lake) is an artificial lake in northwest Oregon, United States, which is an impoundment of Scoggins Creek which drains a small portion of the eastern side of Northern Oregon Coast Range. The lake and creek are part of the Tualatin River’s watershed in the Tualatin Valley. It is located about 5 miles (8 km) southwest of Forest Grove, Oregon.
Scoggins Dam 
Scoggins Dam was built in 1975 by the United States Bureau of Reclamation, which still owns and operates the facility. Hagg Lake contains 53,640 acre feet (66,160,000 m3) of water that can be used. Some water from the lake is used by Clean Water Services to augment the flow of the Tualatin River during the summer months to reduce the temperature and improve water quality. Other users include four cities and the Tualatin Valley Irrigation District.
See also 
- Washington County Soil and Water Conservation District and U.S. Department of the Interior, BLM (February 2000). "Upper Tualatin-Scoggins Watershed Analysis" (PDF). Retrieved 2007-07-08.
- Colby, Richard. Hagg Lake water helps river run. The Oregonian, July 1, 2004.
- "Geographic Names Information System Feature Detail Report Henry Hagg Lake". Retrieved 2007-07-08.
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